Error using plot. Vectors must be the same length

Can anyone help with this? I'm trying to do a timeseries plot of SST for 3 months and I keep getting the following error: Error using plot Vectors must be the same length. I ran a whos command and it looks like I have about 200 more data points for January than I do for the other two months. Is there a way to fix this?

YY=A(:,1); %year
MM=A(:,2); %month
DD=A(:,3); %day
hh=A(:,4); %hour
mm=A(:,5); %minute
WDIR=A(:,6); %Wind Direction (degree)
WSPED=A(:,7); %Wind Speed (m/s)
tmpc=A(:,14); %Air Temperature (C)
sst=A(:,15); %Sea Surface Temperature
indexjan=find(MM==01); %extract January
sst_Jan=sst(indexjan);%January SST
indexjun=find(MM==06);%extract June
sst_Jun=sst(indexjun);%June SST
indexsep=find(MM==09);%extract September
sst_Sep=sst(indexsep);%September SST
tmpc_Jan=tmpc(indexjan); %January Air Temperature
data_title='Buoy 46093, lat/lon: 36.690N 122.410W'; %Character string for Buoy information
%calculate decimal day:
decimal_hour=hh+(mm/60); %decimal hour
decimal_day=DD+(decimal_hour/24); %decimal day

figure
plot(decimal_day, sst_Jan,'b-')
hold on
plot(decimal_day, sst_Jun,'r-')
plot(decimal_day, sst_Sep,'g-')
grid on
axis([1 31 10 18])
set(gca,'XTick',1:1:31,'YTick',10:1:18)
ylabel('Sea Surface Temperature (C)')
xlabel('Decimal Day of Month')
legend('Jan 2008','Jun 2008','Sep 2008')
title(data_title)
Error using plot
Vectors must be the same length.

>> whos Name Size Bytes Class Attributes

decimal_day       7040x1               56320  double                     
sst_Jan            713x1                5704  double              
sst_Jun            574x1                4592  double              
sst_Sep            577x1                4616  double

Answer 1

[KL]

Shouldn't you be using only the hours and minutes relevant to those respective months?

 decimal_hour = hh(indexjan)+(mm(indexjan)/60)

and similarly for the other months? In that case, corresponding x and y data to plot would be of same length.

[Jen Gruber]

OMG that was it, thank you!!!!